CN104769827B - Supply unit - Google Patents

Supply unit Download PDF

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Publication number
CN104769827B
CN104769827B CN201280076937.6A CN201280076937A CN104769827B CN 104769827 B CN104769827 B CN 104769827B CN 201280076937 A CN201280076937 A CN 201280076937A CN 104769827 B CN104769827 B CN 104769827B
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CN
China
Prior art keywords
mentioned
voltage
capacitor
motor
load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201280076937.6A
Other languages
Chinese (zh)
Other versions
CN104769827A (en
Inventor
山田良昭
土屋孝幸
肥喜里邦彦
井谷幸
井谷幸一
远山洋
三宅范明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UD Trucks Corp
Original Assignee
Volvo Truck Corp
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Publication date
Application filed by Volvo Truck Corp filed Critical Volvo Truck Corp
Publication of CN104769827A publication Critical patent/CN104769827A/en
Application granted granted Critical
Publication of CN104769827B publication Critical patent/CN104769827B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B60L7/16—Dynamic electric regenerative braking for vehicles comprising converters between the power source and the motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
    • H02P3/14—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by regenerative braking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P4/00—Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/14—Boost converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention is that secondary cell and capacitor bank are provided to the supply unit of power supply to load altogether, and the supply unit possesses：By-pass switch, in the case where the voltage of above-mentioned capacitor is that can drive the voltage of above-mentioned load, the by-pass switch is switched to on-state, enabling power supply is provided directly from above-mentioned capacitor to above-mentioned load；And the first DC DC converter, in the case where the voltage of above-mentioned capacitor is less than and can drive the minimum voltage of above-mentioned load, the voltage of above-mentioned capacitor can be raised and provide above-mentioned load by the first DC DC converters.

Description

Supply unit
Technical field
The present invention relates to a kind of supply unit that power supply is provided to load.
Background technology
Since in the past, a kind of supply unit that battery and capacitor bank are provided to power supply to load altogether has been used.In day A kind of automotive power supply system for being connected in parallel battery and capacitor is disclosed in this JP2006-345606A.In the power supply system In system, by the electric energy that is provided from capacitor and battery come the inverter of drive motor.
The content of the invention
However, in Japanese JP2006-345606A power-supply system, inversion can be driven when the voltage of capacitor is less than During the voltage of device, become to utilize the electric energy come sufficient power from capacitor come drive motor.In addition, with electric discharge when voltage it is slow under The secondary cell of drop is different, and capacitor has the characteristic declined in electric discharge voltage linear.Therefore, when under the voltage of capacitor During drop, even if also remaining has electric energy, also become that electric energy can not be provided from capacitor to drive inverter.
The present invention is to complete in view of the above problems, and its object is to effectively apply flexibly the electric energy of capacitor.
According to some way of the present invention, there is provided a kind of to provide secondary cell and capacitor bank to power supply to load altogether Supply unit, the supply unit possesses：By-pass switch, it is the voltage that can drive above-mentioned load in the voltage of above-mentioned capacitor In the case of, the by-pass switch is switched to on-state, enabling electricity is provided directly from above-mentioned capacitor to above-mentioned load Source；And first dc-dc, it is less than the situation for the minimum voltage that can drive above-mentioned load in the voltage of above-mentioned capacitor Under, the voltage of above-mentioned capacitor can be raised and provide above-mentioned load by first dc-dc.
Below, embodiments of the present invention, advantages of the present invention are explained referring to the drawings.
Brief description of the drawings
Fig. 1 is the circuit diagram of the supply unit of the first embodiment of the present invention.
Fig. 2 is the block diagram of the supply unit of the first embodiment of the present invention.
Fig. 3 is to represent that the power supply from supply unit to load provides the flow chart of control.
Fig. 4 is the figure for the effect for illustrating supply unit.
Fig. 5 is the circuit diagram of the supply unit of second embodiment of the present invention.
Fig. 6 is the circuit diagram of the supply unit of third embodiment of the present invention.
Embodiment
Below, embodiments of the present invention are explained with reference to.
(first embodiment)
Below, the supply unit 100 of the first embodiment of the present invention is illustrated referring to figs. 1 to Fig. 4.
First, the structure of supply unit 100 is illustrated referring to Figures 1 and 2.
Supply unit 100 is that secondary cell 1 and capacitor 2 combine to provide the device of power supply to load.The load It is the inverter 50 for carrying out drive motor 5 from secondary cell 1 and the offer power supply of capacitor 2.Supply unit 100 is applied to HEV (Hybrid Electric Vehicle：Hybrid vehicle), EV (Electric Vehicle：Electric vehicle) etc..
First, the motor 5 that the inverter 50 of power supply is provided and driven by inverter 50 from supply unit 100 is illustrated.
Motor 5 is mounted in HEV, EV drive motor.Motor 5 is to generate rotary magnetic using three-phase alternating current And powered three-phase induction dynamotor.Motor 5 possesses stator and rotor, and the stator has in inner circumferential to be respectively constituted Multiple coils (omitting diagram) of U phases, V phases and W phases, the rotor has permanent magnet, is rotated in the inner circumferential of stator.Motor 5 Stator be fixed on car body (omit diagram), the rotary shaft of rotor and the axletree (omit and illustrate) of wheel link.Motor 5 can The rotation of wheel is converted electrical energy into, and the rotation of wheel can be converted to electric energy.
Inverter 50 is the current transformation from the direct current power generation alternating electromotive force provided by secondary cell 1 and capacitor 2 Machine.The rated voltage of inverter 50 is 600V, and it is 350V that can drive its minimum voltage.The minimum voltage is equivalent to can drive The minimum voltage of dynamic load.
The direct current power provided from secondary cell 1 and capacitor 2 is converted to and differs 120 degree successively by phase by inverter 50 The exchange of three-phase that forms of U phases, V phases and W phases and provide and arrive motor 5.
Inverter 50 has positive side power line 51a, minus side power line 51b, U phase power line 51u, V phase power line 51v, W phase Power line 51w.Positive side power line 51a is connected with the positive pole of secondary cell 1 and capacitor 2.Minus side power line 51b and secondary cell 1 and capacitor 2 negative pole connection.U phase power line 51u, V phase power line 51v and W phase power lines 51w is arranged at positive side electric power Between line 51a and minus side power line 51b.In addition, it is connected in parallel between positive side power line 51a and minus side power line 51b flat Sliding capacitor 55, the direct current power that the smoothing capacity device 55 makes to flow between secondary cell 1 and capacitor 2 and inverter 50 are put down Cunningization.
Inverter 50 has six IGBT (Insulated Gate Bipolar Transistor as switch element： Insulated gate bipolar transistor) 53u, 54u, 53v, 54v, 53w and 54w.These IGBT53u~54w are that have oppositely parallel connection The IGBT with diode of the commutation diode of connection.
IGBT 53u and IGBT 54u are disposed in series in U phase power lines 51u.U phase power lines 51u IGBT 53u with The coil of composition U phases between IGBT 54u with motor 5 is connected.IGBT 53v and IGBT 54v are disposed in series in V phases electricity Line of force 51v.The coil of composition V phases between V phase power lines 51v IGBT 53v and IGBT54v with motor 5 is connected.IGBT 53w and IGBT 54w are disposed in series in W phase power lines 51w.Between W phase power lines 51w IGBT 53w and IGBT 54w with The coil connection of the composition W phases of motor 5.
IGBT 53u, 54u, 53v, 54v, 53w and 54w are controlled by motor controller (omitting diagram), thus Inverter 50 generates alternating current and carrys out drive motor 5.
Then, the structure of supply unit 100 is illustrated.
Supply unit 100 possesses：Secondary cell power supply portion 11, it has secondary cell 1；Capacitor power portion 21, it has There is capacitor 2；And controller 30 (reference picture 2), it is controlled from secondary cell 1 and capacitor 2 to the power supply of inverter 50 There is provided.Secondary cell power supply portion 11 and capacitor power portion 21 are connected in parallel.That is, secondary cell 1 is in parallel with capacitor 2 Connection.
Secondary cell 1 is the chemical cells such as lithium rechargeable battery, nickel-hydrogen secondary cell.Here, the voltage of secondary cell 1 It is set to 300V.Detection SOC (State of Charge are set to secondary cell 1：Charged state) and send out corresponding signal It is sent to the secondary cell SOC detectors 1a (reference picture 2) of controller 30.
Capacitor 2 is to be connected in series multiple to be set to desired voltage and be connected in parallel multiple desired to be set to The double layer capacitor of capacitance of storage.Here, the voltage of capacitor 2 is set to 600V.Detection voltage is set to capacitor 2 simultaneously Corresponding signal is sent to the condenser voltage detector 2a (reference picture 2) of controller 30.
Capacitor power portion 21 possesses：By-pass switch 22, it is the voltage for being capable of drive motor 5 in the voltage of capacitor 2 In the case of, the by-pass switch 22 is switched to on-state；And dc-dc 25 (the first dc-dc), in electricity In the case that the voltage of container 2 is less than and can drive the minimum voltage of inverter 50, the dc-dc 25 is by capacitor 2 Voltage is raised to allow to provide to inverter 50.
Control is opened and closed by controller 30 in by-pass switch 22.By-pass switch 22 is when being switched to on-state so that Power supply can be provided directly from capacitor 2 to inverter 50.When by-pass switch 22 is switched to off-state, can not directly from Capacitor 2 provides power supply to inverter 50.In this case, carried out via dc-dc 25 from capacitor 2 to inverter 50 Power supply offer.
In addition, by-pass switch 22 when being switched to connection status, can make by motor 5 generate electricity obtained electric power without Capacitor 2 is directly filled into by dc-dc 25.Energy loss during charging thereby, it is possible to reduce capacitor 2.
The voltage of capacitor 2 can be raised and provide motor 5 by dc-dc 25, and can will be by electronic The electric power that the generating of machine 5 obtains is depressured and is filled into capacitor 2.
Dc-dc 25 possesses：Reactor 26, it is arranged at the downstream of capacitor 2；Controlling transistor 27 is depressured, its It is arranged between the upstream of reactor 26 and motor 5；Boosting rectifier control transistor 28, it is arranged at reactor 26 and motor 5 Downstream between；And smoothing capacity device 29, it is connected in parallel with capacitor 2.
The energy accumulation when boosting rectifier control transistor 28 turns on of reactor 26.Moreover, it is changed into boosting rectifier control transistor 28 During cut-off, it is output from the voltage of the input of capacitor 2 and by the induced electromotive force for the energy production accumulated in reactor 26.By This, input voltage can be raised and exported by the switching of boosting rectifier control transistor 28 by reactor 26.
Boosting rectifier control transistor 28 is switched by controller 30.Boosting rectifier control transistor 28 is that have oppositely in parallel connect The IGBT with diode of the commutation diode connect.The electric current that boosting rectifier control transistor 28 allows hand over reactor 26 is felt to utilize Electromotive force is answered to provide voltage rise by what is provided to motor 5.
When boosting rectifier control transistor 28 is switched into conducting, carry out the electric current of positive pole of sufficient power from capacitor 2 via reactor 26 The negative pole of capacitor 2 is flowed to boosting rectifier control transistor 28.By the loop of the electric current in reactor 26 energy accumulation.
Decompression controlling transistor 27 is switched by controller 30.Decompression controlling transistor 27 is that have oppositely in parallel connect The IGBT with diode of the commutation diode connect.Being depressured controlling transistor 27 can be by switching filling from motor 5 Piezoelectric voltage reduces.The electric power that the generating of motor 5 obtains is depressured and is filled into electricity by decompression controlling transistor 27 by chop control Container 2.
Smoothing capacity device 29 makes to be smoothed by the voltage that decompression controlling transistor 27 export after chop control.Thus, Can make to capacitor 2 be filled with by motor 5 generate electricity obtain electric power when voltage smoothing so that stably.
Secondary cell power supply portion 11 possesses dc-dc 15 (the second dc-dc), become can not by from The power supply of capacitor 2 is come in the case of driving inverter 50, the dc-dc 15 can raise the voltage of secondary cell 1 And provide and arrive motor 5.
The voltage of secondary cell 1 can be raised and provide motor 5 by dc-dc 15, and can will be by electricity The electric power that the generating of motivation 5 obtains is depressured and is filled into secondary cell 1.
Dc-dc 15 possesses：Reactor 16, it is arranged at the downstream of secondary cell 1；Controlling transistor 17 is depressured, It is arranged between the upstream of reactor 16 and motor 5, can make the charging voltage from motor 5 by switching over Reduce；And boosting rectifier control transistor 18, it is arranged between the downstream of reactor 16 and motor 5, allows hand over reactor 16 electric current come utilize induction electric will definitely to motor 5 provide offer voltage raise.Their structure and dc-dc 25 is identical, therefore in this detailed description will be omitted.
Controller 30 (reference picture 2) is used for the control for carrying out supply unit 100.Controller 30 is that possess CPU (central operations Processing unit), ROM (read-only storage), RAM (random access memory) and I/O interfaces (input/output interface) it is miniature Computer.Data in RAM storages CPU processing.ROM prestores CPU control program etc..I/O interfaces are used in and institute The input and output of information between the equipment of connection.By making CPU, RAM etc. be acted according to the program preserved in ROM come real The control of existing supply unit 100.
Then, reference picture 3 and Fig. 4 illustrate control of the controller 30 to supply unit 100.Controller 30 for example with every 10 milliseconds of Fixed Time Interval performs the routine shown in Fig. 3 repeatedly.In Fig. 4, transverse axis represent the time, the longitudinal axis from top to bottom according to The secondary input for representing the driving force of motor 5, the output voltage of capacitor 2, the output voltage of secondary cell 1 and inverter 50 Voltage.
In a step 101, controller 30 is read in by the voltage of the condenser voltage detector 2a capacitors 2 detected.
In a step 102, controller 30 judges whether the voltage of capacitor 2 is more than first setting voltage.Walked when passing through Rapid 102 when being determined as the voltage of capacitor 2 to be more than first setting voltage, is transferred to step 103, returns.On the other hand, when logical When crossing step 102 and being determined as the voltage of capacitor less than the first setting voltage, step 104 is transferred to.
The first setting voltage is set to compared to the minimum voltage of inverter 50 can be driven only to be higher by margin voltage Value.Here, the minimum voltage that can drive inverter 50 is 350V, thus the first setting voltage be set to it is more slightly higher than 350V Value.
In step 103, by-pass switch 22 is set to on-state by controller 30.Thus, directly from capacitor 2 to inversion Device 50 provides power supply and carrys out drive motor 5.
The state and the t in Fig. 40To t1Between time it is suitable.Specifically, from t0Act the EV for starting with motor 5 Traveling, the voltage of capacitor 2 proportionally decline the amount suitable with the electric energy consumed.Then, EV travelings continue to electric capacity Untill the voltage of device 2 sets voltage close to the minimum voltage that can drive inverter 50 and less than above-mentioned first.
Now, power supply is provided directly from capacitor 2 to inverter 50, therefore energy loss is small.Therefore, it is possible to play electric capacity The characteristic of device 2, moment provide high current to inverter 50.
At step 104, by-pass switch 22 is set to off-state by controller 30.Thus, no longer directly from capacitor 2 to Inverter 50 provides power supply.Now, remaining has electric energy in capacitor 2.Think the reduction of electric energy and the reduction of voltage into than In the case of example, if as 100% when setting full charge, being reduced to remaining in 350V capacitor 2 from 600V has about 34% electricity Energy.
In the past, when the voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, even if residual in capacitor 2 Having electric energy will not also be driven from capacitor 2 to inverter 50.Therefore, in supply unit 100, utilize as described below Remaining electric energy in capacitor 2.
In step 105, controller 30 judges whether the voltage of capacitor 2 is more than second setting voltage.Walked when passing through Rapid 105 when being determined as the voltage of capacitor 2 to be more than second setting voltage, is transferred to step 106, returns.On the other hand, when logical When crossing step 105 and being determined as the voltage of capacitor less than the second setting voltage, step 107 is transferred to, is returned.
The second setting voltage is configured to compared to the i.e. minimum operating voltage of minimum voltage that capacitor 2 can work only It is higher by the value of margin voltage.In addition, the second setting voltage is configured to the value lower than the first above-mentioned setting voltage.
In step 106, controller 30 provides the power supply come sufficient power from capacitor 2 after being raised by dc-dc 25 Inverter 50.So, even if the voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, dc-dc 25 The voltage of capacitor 2 can be raised and inverter 50 is provided.
The state and the t in Fig. 41To t2Between time it is suitable.Specifically, by dc-dc 25 by capacitor 2 voltage raises and provides inverter 50, therefore from t0The EV travelings of beginning pass through t1Also continue to t afterwards2Untill.Now, it is electric The virtual voltage of container 2 also proportionally declines the amount suitable with the electric energy consumed like that as indicated by chain dotted lines.Moreover, the EV Untill traveling continues to that the virtual voltage of capacitor 2 sets voltage close to minimum operating voltage and less than above-mentioned second.
As described above, even if the voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, can also use Remaining electric energy drives inverter 50 in capacitor 2.Thus, it is possible to effectively apply flexibly the electric energy of capacitor 2.
Further, since the electric energy of capacitor 2 can be applied flexibly effectively, therefore it can reduce to inverter 50 and export identical The capacity of capacitor 2 needed for electric energy.Therefore, it is possible to make the miniaturization of capacitor 2.In addition, applied by supply unit 100 In the case of HEV, it is compared with the past can carry out EV travelings distance it is elongated, therefore the fuel consumption of engine can be reduced Amount.
On the other hand, in step 107, after controller 30 will be raised by dc-dc 15 from secondary cell 1 Power supply provides and arrives inverter 50.In step 107, the electric energy in capacitor 2 has been reduced to the level that can not be used, therefore makes Inverter 50 is driven with secondary cell 1.Specifically, make the voltage of secondary cell 1 be increased to above-mentioned first from 300V to set Voltage is determined to drive inverter 50.
That is, in the case where the voltage of capacitor 2 gets lower than the second setting voltage, stop changing from DC-DC Device 25 provides power supply to inverter 50, starts to provide power supply from dc-dc 15 to inverter 50.
The state and the t in Fig. 42To t3Between time it is suitable.Specifically, by dc-dc 15 by secondary electricity The voltage in pond 1 raises and provides inverter 50, therefore from t0The EV travelings of beginning pass through t2Also continue to t afterwards3Untill.
Moreover, the EV traveling can continue to it is small by the SOC of the secondary cell SOC detectors 1a secondary cells 1 detected Untill setting value.In addition, in the case of HEV, even if by the secondary cell SOC detectors 1a secondary cells 1 detected SOC is less than setting value, can also make engine (the omitting diagram) work of vehicle and be gone by the driving force from engine Sail.
Embodiment more than, plays effect described below.
In supply unit 100, even if the voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, DC-DC The voltage of capacitor 2 can also be raised and provide inverter 50 by converter 25.Therefore, even if the voltage of capacitor 2 is less than The minimum voltage of inverter 50 can be driven, also can drive inverter 50 using electric energy remaining in capacitor 2.Thus, The electric energy of capacitor 2 can effectively be applied flexibly.
Further, since the electric energy of capacitor 2 can be applied flexibly effectively, therefore it can reduce to inverter 50 and export identical The capacity of capacitor 2 needed for electric energy.Therefore, it is possible to make the miniaturization of capacitor 2.In addition, applied by supply unit 100 In the case of HEV, it is compared with the past can carry out EV travelings distance it is elongated, therefore the fuel consumption of engine can be reduced Amount.
In addition, in the braking of vehicle, first, the electric energy obtained by the generating of motor 5 is filled into capacitor 2.Now, Capacitor 2 voltage less than in the case of can driving the minimum voltage of inverter 50, controller 30 sets by-pass switch 22 For on-state.Thereby, it is possible to capacitor 2 is charged by the induced voltage of motor 5.
If the voltage of capacitor 2 is changed into drive more than the minimum voltage of inverter 50, controller 30 turns DC-DC The electric energy obtained by the generating of motor 5 is depressured and is filled into capacitor 2 by the work of parallel operation 25.Thereby, it is possible to be adjusted to be suitable to The voltage and current of the charging of capacitor 2, therefore efficiently capacitor 2 can be charged.
Then, if capacitor 2 is changed into full charge, controller 30 makes the work of dc-dc 15 to be sent out by motor 5 The electric energy that electricity obtains is depressured and is filled into secondary cell 1.In this case, the charging suitable for secondary cell 1 can be also adjusted to Voltage and current, therefore efficiently secondary cell 1 can be charged.
(second embodiment)
Below, reference picture 5 illustrates the supply unit 200 of second embodiment of the present invention.In addition, described below In each embodiment, pair identical reference is marked with foregoing embodiment identical structure, it is appropriate to omit saying of repeating It is bright.
Supply unit 200 is that secondary cell 1 combines with capacitor 2 to provide to the inverter 50 of drive motor 5 The device of power supply.
Supply unit 200 possesses：Secondary cell power supply portion 211, it has secondary cell 1；Capacitor power portion 221, its With capacitor 2；And controller 30 (reference picture 2), it is controlled from secondary cell 1 and capacitor 2 to the power supply of inverter 50 Offer.
Capacitor power portion 221 possesses：By-pass switch 22, it is the voltage for being capable of drive motor 5 in the voltage of capacitor 2 In the case of, the by-pass switch 22 is switched to on-state；And dc-dc 225 (the first dc-dc), In the case that the voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, the dc-dc 225 can be by electricity The voltage of container 2 raises and provides inverter 50.
The voltage of capacitor 2 can be raised and provide motor 5 by dc-dc 225, and can will be by electronic The electric power that the generating of machine 5 obtains is depressured and is filled into capacitor 2.
Dc-dc 225 possesses：Reactor 26 (the first reactor), it is arranged at the downstream of capacitor 2；Decompression control Transistor 27 processed, it is arranged between the upstream of reactor 26 and motor 5；Boosting rectifier control transistor 28, it is arranged at reactance Between the downstream of device 26 and motor 5；And smoothing capacity device 29, it is connected in parallel with capacitor 2.
The voltage of secondary cell 1 can be raised and provide motor 5 by dc-dc 215, and can will be by electricity The electric power that the generating of motivation 5 obtains is depressured and is filled into secondary cell 1.
Dc-dc 215 possesses：Reactor 16 (the second reactor), it is arranged at the downstream of secondary cell 1；Decompression Controlling transistor 27, it is arranged between the upstream of reactor 16 and motor 5, can be made by switching over from electronic The charging voltage of machine 5 reduces；And boosting rectifier control transistor 28, it is arranged between the downstream of reactor 16 and motor 5, energy Enough switch reactor 16 electric current come utilize induction electric will definitely to motor 5 provide offer voltage rise.
So, dc-dc 215 possesses the reactor 16 in the downstream for being arranged at secondary cell 1, with dc-dc 225 share decompression controlling transistor 27 and boosting rectifier control transistor 28.
Specifically, dc-dc 215 possesses switching switch 213, and dc-dc 225 possesses switching switch 223. Switching switch 213, which is arranged at, is linked in the downstream of reactor 16 between decompression controlling transistor 27 and boosting rectifier control transistor 28 Wiring.On the other hand, switching switch 223 is arranged at is linked to decompression controlling transistor 27 and boosting by the downstream of reactor 26 Wiring between controlling transistor 28.
Switching switch 213 in an ON state, in the case that switching switch 223 is off, decompression control is brilliant Body pipe 27 and boosting rectifier control transistor 28 form dc-dc 215.On the other hand, in switching switch 213 in disconnection shape In the case that state, switching switch 223 in an ON state, it is depressured controlling transistor 27 and boosting rectifier control transistor 28 forms DC- DC converters 225.
In accordance with the above, it is also in supply unit 200, even if the voltage of capacitor 2, which is less than, can drive inverter The voltage of capacitor 2 can also be raised and provide inverter 50 by 50 minimum voltage, dc-dc 225.Therefore, even if The voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, can also be driven using electric energy remaining in capacitor 2 Dynamic inverter 50.Thus, it is possible to effectively apply flexibly the electric energy of capacitor 2.
In addition, by sharing decompression controlling transistor 27 and boosting in dc-dc 215 and dc-dc 225 Controlling transistor 28, number of components can be reduced to cut down cost.
(the 3rd embodiment)
Below, reference picture 6 illustrates the supply unit 300 of third embodiment of the present invention.
Supply unit 300 is that secondary cell 1 combines with capacitor 2 to provide to the inverter 50 of drive motor 5 The device of power supply.
Supply unit 300 possesses：Secondary cell power supply portion 311, it has secondary cell 1；Capacitor power portion 321, its With capacitor 2；And controller 30 (reference picture 2), it is controlled from secondary cell 1 and capacitor 2 to the power supply of inverter 50 Offer.
Capacitor power portion 321 possesses：By-pass switch 22, it is the voltage for being capable of drive motor 5 in the voltage of capacitor 2 In the case of, the by-pass switch 22 is switched to on-state；And dc-dc 325 (the first dc-dc), In the case that the voltage of capacitor 2 is less than and can drive the minimum voltage of inverter 50, the dc-dc 325 is by capacitor 2 Voltage raise and inverter 50 be provided.
The voltage of capacitor 2 can be raised and provide motor 5 by dc-dc 325, and can will be by electronic The electric power that the generating of machine 5 obtains is depressured and is filled into capacitor 2.
Dc-dc 325 possesses：Reactor 26, it is arranged at the downstream of capacitor 2；Controlling transistor 27 is depressured, its It is arranged between the upstream of reactor 26 and motor 5；Boosting rectifier control transistor 28, it is arranged at reactor 26 and motor 5 Downstream between；And smoothing capacity device 29, it is connected in parallel with capacitor 2.
The voltage of secondary cell 1 can be raised and provide motor 5 by dc-dc 315, and can will be by electricity The electric power that the generating of motivation 5 obtains is depressured and is filled into secondary cell 1.
Dc-dc 315 possesses：Reactor 26, it is arranged at the downstream of secondary cell 1；Controlling transistor 27 is depressured, It is arranged between the upstream of reactor 26 and motor 5, can make the charging voltage from motor 5 by switching over Reduce；And boosting rectifier control transistor 28, it is arranged between the downstream of reactor 26 and motor 5, allows hand over reactor 26 electric current come utilize induction electric will definitely to motor 5 provide offer voltage raise.
So, dc-dc 315 and dc-dc 325 share reactor 26, decompression controlling transistor 27 and Boosting rectifier control transistor 28.
Specifically, dc-dc 315 possesses switching switch 313, and dc-dc 325 possesses switching switch 323. Switching switch 313, which is arranged at, is linked to the upstream of reactor 26 between decompression controlling transistor 27 and boosting rectifier control transistor 28 Wiring.On the other hand, switching switch 323 is arranged at is linked to decompression controlling transistor 27 and boosting by the upstream of reactor 26 Wiring between controlling transistor 28.
Switching switch 313 in an ON state, in the case that switching switch 323 is off, reactor 26, drop Controlling transistor 27, boosting rectifier control transistor 28 is pressed to form dc-dc 315.On the other hand, it is in switching switch 313 In the case that off-state, switching switch 323 in an ON state, reactor 26, decompression controlling transistor 27, boosting rectifier control are brilliant Body pipe 28 forms dc-dc 325.
In accordance with the above, it is also in supply unit 300, even if the voltage of capacitor 2, which is less than, can drive inverter The voltage of capacitor 2 can also be raised and provide inverter 50 by 50 minimum voltage, dc-dc 225.Therefore, even if The voltage of capacitor 2 is less than the minimum voltage that can drive inverter 50, can also be driven using electric energy remaining in capacitor 2 Dynamic inverter 50.Thus, it is possible to effectively apply flexibly the electric energy of capacitor 2.
In addition, by sharing reactor 26, decompression control crystal in dc-dc 315 and dc-dc 325 Pipe 27 and boosting rectifier control transistor 28, number of components can be reduced further to cut down cost.
Embodiments of the present invention are explained above, but above-mentioned embodiment only shows the application examples of the present invention A part, be not meant to the technical scope of the present invention being defined to the concrete structure of above-mentioned embodiment.
For example, the numerical value of voltage in above-mentioned embodiment etc. is the numerical value illustrated, these numerical value are not limited to.
In addition, in the above-described embodiment, supply unit 100,200,300 is controlled by controller 30, passes through electricity Motivation controller (omit diagram) controls inverter 50.It can also replace by single controller to control supply unit 100th, 200,300 and inverter 50.
In addition, above-mentioned each IGBT is the IGBT with diode with the commutation diode being oppositely connected in parallel. It can also replace and the not IGBT of diode-built-in and the rectification being oppositely connected in parallel with IGBT are separately set Diode.
The exclusive property or feature that embodiments of the invention are included are recorded in claim as above.

Claims (10)

1. a kind of supply unit, provide secondary cell and capacitor bank to power supply to load altogether, the supply unit possesses：
First dc-dc, it is connected between above-mentioned capacitor and above-mentioned load, can be by the voltage liter of above-mentioned capacitor It is high；
By-pass switch, it can be provided when being switched to on-state around above-mentioned first dc-dc to above-mentioned load The power supply of above-mentioned capacitor；
Controller, it is used to control above-mentioned first dc-dc and the on-state of above-mentioned by-pass switch,
Wherein, above-mentioned secondary cell is connected without above-mentioned first dc-dc with above-mentioned load,
In the case where the voltage of above-mentioned capacitor is that can drive the voltage of above-mentioned load, controller noted above opens above-mentioned bypass Concern is changed to on-state so that power supply is provided directly from above-mentioned capacitor to above-mentioned load,
Above-mentioned capacitor voltage be less than can drive the minimum voltage of above-mentioned load in the case of, controller noted above passes through upper The first dc-dc is stated to raise the voltage of above-mentioned capacitor and above-mentioned load is provided, and
Above-mentioned capacitor voltage be less than can drive the minimum voltage of above-mentioned load in the case of, controller noted above will be above-mentioned By-pass switch switches to on-state, and above-mentioned capacitor is charged by the induced voltage of above-mentioned load.
2. supply unit according to claim 1, it is characterised in that
The second dc-dc is also equipped with, above-mentioned load is driven becoming that the power supply from above-mentioned capacitor can not be utilized In the case of, the voltage of above-mentioned secondary cell can be raised and provide above-mentioned load by second dc-dc.
3. supply unit according to claim 2, it is characterised in that
It is less than the voltage than the minimum voltage of above-mentioned load can be driven only to be higher by margin voltage in the voltage of above-mentioned capacitor In the case of, above-mentioned by-pass switch is switched to off-state,
In the case where above-mentioned by-pass switch is switched to off-state, above-mentioned first dc-dc is by above-mentioned capacitor Voltage raises and provides above-mentioned load.
4. supply unit according to claim 3, it is characterised in that
Above-mentioned capacitor voltage be less than than the capacitor minimum operating voltage be only higher by margin voltage voltage situation Under, stop providing power supply from above-mentioned first dc-dc to above-mentioned load, start upward from above-mentioned second dc-dc State load and power supply is provided.
5. supply unit according to claim 2, it is characterised in that
Above-mentioned load is to carry out the inverter of drive motor from above-mentioned secondary cell and above-mentioned capacitor offer power supply.
6. supply unit according to claim 5, it is characterised in that
The electric power for generating electricity to obtain by above-mentioned motor can be depressured and be filled into above-mentioned electric capacity by above-mentioned first dc-dc Device,
The electric power for generating electricity to obtain by above-mentioned motor can be depressured and be filled into above-mentioned secondary electricity by above-mentioned second dc-dc Pond.
7. supply unit according to claim 5, it is characterised in that
For above-mentioned by-pass switch when being switched to on-state, the electric power that can make to generate electricity to obtain by above-mentioned motor is not via upper State the first dc-dc and be directly filled into above-mentioned capacitor.
8. supply unit according to claim 5, it is characterised in that
Above-mentioned first dc-dc and above-mentioned second dc-dc possess respectively：
Reactor, it is arranged at the downstream of above-mentioned secondary cell or above-mentioned capacitor；
Controlling transistor is depressured, it is arranged between the upstream of above-mentioned reactor and above-mentioned motor, can be by switching over Reduce the charging voltage from above-mentioned motor；And
Boosting rectifier control transistor, it is arranged between the downstream of above-mentioned reactor and above-mentioned motor, allows hand over above-mentioned reactance The offer voltage that the electric current of device provides to utilize induced electromotive force to make to above-mentioned motor raises.
9. supply unit according to claim 5, it is characterised in that
Above-mentioned first dc-dc possesses：
First reactor, it is arranged at the downstream of above-mentioned capacitor；
Controlling transistor is depressured, it is arranged between above-mentioned first reactor and the upstream of above-mentioned motor, can pass through progress Switch reduce the charging voltage from above-mentioned motor；And
Boosting rectifier control transistor, it is arranged between above-mentioned first reactor and the downstream of above-mentioned motor, allowed hand over above-mentioned The offer voltage that the electric current of first reactor provides to utilize induced electromotive force to make to above-mentioned motor raises,
Above-mentioned second dc-dc possesses second reactor in the downstream for being arranged at above-mentioned secondary cell, and the 2nd DC-DC turns Parallel operation shares above-mentioned decompression controlling transistor and above-mentioned boosting rectifier control transistor with above-mentioned first dc-dc.
10. supply unit according to claim 5, it is characterised in that
Above-mentioned first dc-dc possesses：
Reactor, it is arranged at the downstream of above-mentioned capacitor；
Controlling transistor is depressured, it is arranged between the upstream of above-mentioned reactor and above-mentioned motor, can be by switching over Reduce the charging voltage from above-mentioned motor；And
Boosting rectifier control transistor, it is arranged between the downstream of above-mentioned reactor and above-mentioned motor, allows hand over above-mentioned reactance The offer voltage that the electric current of device provides to utilize induced electromotive force to make to above-mentioned motor raises,
Wherein, above-mentioned second dc-dc shares above-mentioned reactor with above-mentioned first dc-dc, above-mentioned decompression controls Transistor and above-mentioned boosting rectifier control transistor.
CN201280076937.6A 2012-11-07 2012-11-07 Supply unit Expired - Fee Related CN104769827B (en)

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